• Code: SC822
• Description: Self-Diagnostic Error: HDD The hard disk drive returned an error during the self-diagnostic test.
• Causes: • HDD defective • HDD connector defective • ACU board defective

• Code: SC823
• Description: Self-diagnostic Error: NIC The network interface control returned an error during the self-diagnostic test.
• Causes: • Defective ACU board

• Code: SC824
• Description: Self-diagnostic Error: NVRAM The resident non-volatile RAM returned an error during the self-diagnostic test.
• Causes: • NVRAM of ACU board damaged or abnormal • ACU board defective • NVRAM socket damaged

• Code: SC825
• Description: Self-diagnostic Error: NVRAM (Option) The resident non-volatile RAM returned an error during the self-diagnostic test.
• Causes: • NVRAM of ACU board damaged or abnormal • NVRAM socket damaged

• Code: SC826
• Description: Self-diagnostic Error: NVRAM (RTC Option) If this NVRAM is installed, the difference between the 1 second measurement of RTC and 1 second CPU timer exceeds the allowable limit.
• Causes: • RTC device error

• Code: SC827
• Description: Self-diagnostic Error: RAM The resident RAM returned a verify error during the self-diagnostic test.
• Causes: • Defective ACU board

• Code: SC828
• Description: Self-diagnostic Error: ROM The resident read-only memory returned an error during the selfdiagnostic test.
• Causes: • ACU board defective • Firmware defective (ACU)

• Code: SC829
• Description: Self-diagnostic Error: DIMMRAM The DIMM-RAM returned an error during the self-diagnostic test.
• Causes: • DIMM-RAM defective • ACU board defective